orrock



May 8, 1928. Re. 16,958

J. W. ORROCK VENTILATING SECTIONAL SMOKE JACK Original Filed Aug. 27.v1925 3 Sheets-Sheet 1 Syvum/Lto@ May 8, 1928. Re. 16,958

J. w. ORROCK vENTiLATmG sEcTIoNAL sMoxE JACK Original Filed Auen. 2'?,1925 5 Sheets-Sheet 2 fz la =I= I FL' ,5, f E /Lg R FDQ -L E" n E.:% 4[if M H5 p16 JJ liz/5.9.6

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May 8, 1928. l f Re. 16,958

J. ,w. oRRocK VENTILATING SECTIONAL SMOKE JACK original Filed Aug. 27,.11925 3 Sheets-Sheet 5 lf'jr'g. Z :a

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Reissued May 8, 192.8.

UNITED STATES] y Re. 16,958 PATENT omer..y

JOHN WILSON onnocx, or MONTREAL, QUEBEC, CANADA, AssIGNoR or ONE-HALFfro JOHN M, n. FAIRBAIBN. `or wEsTMoUN'r, QUEBEC, CANADA. y.

VENTILATING snC'rIoNAL SMOKE JACK.

original No. 1,551,979, dared April 2o, 192e,I serial reissue ledFebruary 12,

This invention relates to` smoke `jacks adapted for use in round houses,engine houses and the like to assist the escape of smoke from thestacks. olf locomotives and the escape of steamwhen a boiler is blownoft.

One of the objects of the invention is to form a box-like structurewhichv is very strong, stable and durable thereby reducing installationand maintenance costs to a minimum. Also, the sectional designsimplifies themanufacture, enables the usefof standard material, andinvolves less risk,`

l breakage, and damage in handling.'

A further object is toprovide a sectional .Ventilating smoke jack whichnot only conducts the smoke or steamvfrom the stack of a locomotiveydirectly to the outside of the house or other enclosure, but alsoassists in Ventilating the space beneath `therool' due to the fact thattwo sides of the interior portion of the jack form Ventilating openingslocated substantially at roof or ceiling level. y'

W'itli` the above and other objects in view which will more readilyappear as the nature of the invention is betterunderstood, the saineconsists in the novel construction, coi'nbination and arrangement ofvparts here-v inafter more fully described, illustrated and claimed. y.Y

A preferred and practical ernbodiment ofA the invention is shown in theaccompanying drawings, in which 1 y V' `Figure 1 is a vertical sectionalview of the improved construction.

F'gure 2 is a vertical sectional view taken on the line 2-2 of Fig. 1,showing the sides of thev liack in elevation.

Figure 3 is a plan view of the opening cut in the roofoffthe house orother structure. Figure 4 is a detail plan view of one ot theI main sidesections.

Figure 5 is a detailplan View of one of the end sections. i

Figure is a detail plan view of one of the exterior fine sections.Figure 7 is a detail plan view of one yo portion of the device.

No.` 52,949, med `August 27", 1925. Appncatmn'ror 1927. serial No.167,852.

the extension sections for the main side see tions. f 5 i Figure' is aplan view of the top or cover. Figure 9 is a detailed View illustratingthe change necessary to accommodate a roof vent when encountered. I

Similar reference characters ldesignate corresponding parts throughoutthe severalf igures'of the drawings. y

i The present inventionrelates particularly to a Ventilatingv sectional'smoke stack construction coniprising .sections adaptedto be made up inthe shops-nd then shipped to the point of installation, and has in Viewlcertain improvements on my former PatL ents Nos. 1,150,878, dated August24, 1915 and 1,314.016 dated August 26, 1919.` lIn the respect that thepresent inventionl contemplates a sectional ventilating smoke `jack thepresent invention represents acarrying forward of the idea shown in myPatent No. 1,314,016 aforesaid. A

By reference to the accompanying *draw-` ings it'will be observed thatone of the distinctive vfeatures ofthe present construction resides inproviding adequate Ventilating openings located substantially at roof orceiling level thereby to more adequately pro`` vide for the removal orcarrying` off of they gases collected beneath the roofdue tothe e]ectoraction set up by the forcedor in` duced draft incident to the rush ofsmoke or steam passing through the interior hood resides in forminglthemalin side sections in such a way that they take a direct bearing on theroof of the structure on which the j smoke jack is installed.

As will be observed from Figsilft to 8 inclusive the .presentconstruction includes in `its organization the vmain side-sections A,

the endsections B, the exterior Hue-sections C. the extension sections Dforthe main side-sections, and the top or cover piece E. The main sidesections Apreterably consist of a .body 1 having the upwardlyinclinedside edges 2 which converge toward'thefv cap portion 3 of said sectionand intersectthe bottom edge of the ycap portion 3st apoint inside ofthe outer corners 4 thereof, thereby to provide the root 'engagingshoulders 5.u The side edges of the cap portion 3 are also inclinedupwardly but at lesspitch than the side edges 2, thus providingwthe mainsecftion A with' two pairs of inclined, vand c0netl A further feature yvergently related .side edges, one pair arranged Vbelow the roof and theother `above the same. Y

`The end sections B are stantially rectangular formation and. the

-side edges 6 thereof are adapted` to be fasshown in Figfl.4 Theend-sections B are.

duplicate-and interchangeable for either end of the lmain side sections,and areV therefore of standard size and design.A

The cap portions 3 oflthe main side-sections 1 which project above theroof R` cooperate with the'side-sections C andthe extension-sectionfDto. provide an exhaust ue which communicatesv with the hood H formed bythe sides A and the endsl B, and also 'with thel relatively largeVentilating openings 9 located substantially at roof or ceiling leveland communicating with the spaceunderzthejroof R.

i TheY Hue forming sections theretothe smoke,` steam or other gase's'mayreadily exhaust yet at the same time the cover piece E will prevent rainor the' like falling into thebuilding through the smoke jack. l

the' main side sections, andthe extension sections D, itwill be observedthat the sides thereof areinclined upwardly thereby to provide". anexhaust Hue which tapers toward the discharge end throughout one ofits'dimensions,` thus having the'fetfect of Vstimulating ejector actionto carry` ofi' gases or the like accumulated beneath the roof.V

In installing the device, whichy as previously indicated, may be shippedin knocked-v down form, dueto itssecti'onal construction,

it isproposed to cut a hole 11 in the roof R, the sides 12 of the holebeing provided with.' the corner abutments 13' for cooperating with theshoulders 5 rof thev main side sections A.y After the hole 11 is cut inac` cordance Vwith the conguration shown in Figa-.3 the Vside sectionsv1 maybe lifted y through` the opening and then shifted laterally untilthe shoulders 5 rest upon the corner abutments 13, thereby supportingthe main sections directlyion the roof. To assistrin securingthe ksidesections A the same maybe `bolted as indicated at 14 (Fig. 1) to 5f.

the cross beam 15 rcarried by the rafters 16, Thus, in addition tosupporting the -side sectionsdirectly on the loutside or top of the roofthe asteningsk 14 may be utilized. to insure permanency and stability.In installingthe devicehowever, the shoulders 5 preferably of sub-A Cand D arepreferably-provided with the openings 1()- sothat-whenthecover. piece 'E is appliedv fing openings.

tributing the'aveight of the hood to the rafters 16 where that isdesirable.

` The sections C vand D which cooperate with the cap portion 3 of themain side sections A are preferably secured together at their meetingedgesk by nails, screws or equivalent fastenings, and to provide apractical and durable connection between the flue and the voutside otthe roof a collar 17 may be built about the lower end of the As shownin'Fig. 9 thecollar17 and the.

side of the jack maybe cut to connect with the' roof vent Rwlienencountered. however is a merevexpedient of installation incident tocertain types vof roof construc-v tion and does not alter thelfunctionor struc tural features of the invention.-

A feature ofpractical importance in the present invention Vis:thestructural one, regardless. ofthe material of which the smoke jack ismade, of the topflue'or stack C-D arranged .over andabove the roofopening and the hood, H arranged below the hood .Inpconnection with thecap portion 3 of and'having its two opposite walls B-B eX- This tendinglinto the roof opening and spacedl from the adjacent edges of said roofopening thereby to form two opposite ventilat- This form [ofconstruction provides two Ventilating openings in the most advantageouslocations in order to discharge therethrough any' accumulations otsmokeor gas which otherwise might become trapped immediately under theroot, while at the same time permitting the other sidel walls AD of thejack tobe united or joined and lsubstantially continuous from top tobottom of the jack. Furthermore, it will be `observed thatthesupporting. cross beams 15 and the fastenings 14, though; an optionalfeature of the invention.; provide a stable supporting means carriedwith 4the roof structure which assists in strongly sus-- pending the'hood proper. from the roof structure so that thev particular featureabove described may be embodied inthe jack construction in a thoroughlypracticable manner.` I

From the foregoingjit will be apparent thatthe present sectional typeofV construc-` tion` carries forth. the "idea of my former Patent No.1,314,016 supra in rath'oronghly practical and effective manner. Thevarious sections of the jack may be readilymade in shops or otherconvenient places and readlasA ily transported to remote points ofinstallation where only the lservices of a carpenter or other workmanare required to erect and assemble.

Without further description it is thought that the features andadvantages ofthe present invention will be' readily apparent to those.skilled in the art, and it will of course 'be understood that changes inthe foi-improportion and minor details of construction may be resortedto, Without depart-ing from the spiritof the invention and scope of theappended claims'. In that connection it may be pointed out that thepresent construction embodies features that make it possible to useother materials than Wood, such for example as asbestos, sheets ofconcrete, metal and the like. Thus,l While the drawings' illustrate awood jack of mill type construction, itwi'll be understood that theembodiment shown merely is an example' of one Way of carrying theinvention into effect, the construction being such that any othermaterial may be selected. j i

I claim 1. In a Ventilatin smoke jack, the combination with a roo havingan opening, of

a pair of main sections having` intermediate shoulder portions' adaptedto rest upon the side edges of the opening in the roof, end sectionscarried by the main sections and arranged to provide Vent ports betweenthe end members and the roof, and an exhaust flue cooperating with themain sections and communicating With the interior of the structurethrough said Vent ports. l

2. In a Ventilating smoke jack, the combination with a roof having anopening, of a pair of main sections having intermediate shoulderportions adapted to rest upon the side edges of the opening in the roof,end sections carried bythe main sections and projecting through theopening in the roof to provide vent ports between the end inembers andthe roof, and an exhaust flue cooperating With the main sections andcoini inunicating with the interior of the structure through said ventports.

3. In a Ventilating smoke'jack, the conibination with a roof having anopening, of an interior hoodl having converging end walls andintermediate shoulder portions adapted to engage with the roof adjacentsaid opening and the diverging sides of said hood being spaced from thesides of the opening lying at right angles to the side of the openingengaged by the main section, and an exhaust flue assembled about theportion of the hood which projects exteiiorly of the roof. l

4. In a Ventilating smoke jack,'the coinbination with a roof having anopening, of side sections having tWo pairs of inclined side edgesdisposed respectively above and below the roof level, and sectionscooperating with said pairs of inclinedsides respectively to formIanint-erior converging exhaust `hood'` and" an exterior tapering exhaustflue, and said side sections which form the hood being spaced from theroof opening to provide vent, ports communicating with the l exhaustHue. t i

5. Ina Ventilating smoke jack, the combination with'` a roof having anojgiening,A of side sections having two pairs of eonvergent- 1y relatedside edges having an intermediate roof engaging shoulder tl'ierebetween,-end sections cooperating with the vlovver `pair of converging sideedges to provide an interior hood, aiidfsaid end sections being spacedfrom the edges of the opening'. to provide vent ports at roof level, andflue sections as seni-bled above the roof opening, and, certain vof saidsections being secured `tothev other' pai-r ofincl-ined side edges ofvthe sider forming sections thereby to: provide a tapering vexhaustflue.

6. In a `Ventilating, smoke jack, the combination with a roof havingan-opening, of

`side sections having inclined edges and end A sectionsiitted to saidinclined sides and comprising aninterior hood, an exterior cap portionformed on said side sections and having inclined edges of less pitchthan the f cured to the tapering edges of Asaid cap por-` tion and theextension section.

7. In a Ventilating smoke jack, the combination With a roof having anopening, of a vhood including converging end walls'and a shoulderedportion adapted to engage with the openingand projecting eXterioily ofthe roof While said converging sides thereof are spaced from other sidesof the opening to provide vent ports at ceiling level, and an exhaustflue built about and cooperating with the exteriorly projecting portionof the hood. i

8. In a Ventilating smoke jack, the combination with a roof having anopening, of a hood comprising side sections including por-` tionsadapted to lie below and above the roof and having inclined sides, end`members iioy iitted to the inclined edges of the portion ofr j the sidesections `lying below the roof and spaced from the edge of the openingto pro- Vide vent. ports, and ilue forming sections fitted to theinclined edges of the portion vof the side sections which project abovethe roof level thereby to provide a tapering exhaust Hue.

9. In a Ventilating smoke jack the l`combi- 4nation With `the roofhaving an opening formed with corner abutments, of side secf t-ionshaving intermediate shoulder portions adapted to restupon saidcoi'nerabutments, end sections ,carried by the side sectionsvbe- `.neaththe shoulder portions and spaced from theedges of the opening to providevent ports at roof level, and flue lsections assembled about the portionof tlieside sections ywhich project above theroof level,V

10, Ina knock down ventilatiiigsmoke jack. construction, the combinationwith main side sections having intermediate roof engaging shoulders, endsections vadapted to be :secured to said side sections having theirupper ends spaced inwardly from the outer corners 'of saidshoulders andalso projecting above the. plane thereof, and `flue' forming sectionscooperating with the portion of the side'seetions above theisaidshoulders. 20

, 11. `In a` Ventilatingsmoke jack, the combination with thereof havingvan opening therein, of a flue arranged over andabove the roof opening,and a.hood arrangedbelow the roofand having two of its walls extendinginto the' roof opening'` and spaced from thevadjaeeiit edges thereof` toforni two opposite A*Ventilating openings, and its other two wallsjoined with and orniingssubstanrtial eontinuations of two opposite sidewalls 1 of the-flue.

1.2. In a ventilating iiiof a flue arraiigedover and above the .roofopening, supporting. means seeured to. .and Carried lwiththe rooi:lstructure, and a hood member connecting with ysaid support- 111g meansand disposed below vthe roof structure, said hood havingk two of itsopposmoke jack, the Com-lr binatioii with a roof having an openingtheresite wallsk extending into the roof vopening and spacedV from theadjacent edges thereoil to forni two opposite Ventilating openings,

and having its other two Walls joined with A and forming substantialcontiiiuatioiis of two opposite sides'of the Hue. t

Iii testimony whereof I hereunto aflix my signature;

